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stop.go
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stop.go
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package machine
import (
"context"
"fmt"
"strings"
"time"
"github.com/spf13/cobra"
fly "github.com/superfly/fly-go"
"github.com/superfly/flyctl/internal/command"
"github.com/superfly/flyctl/internal/flag"
"github.com/superfly/flyctl/internal/flapsutil"
mach "github.com/superfly/flyctl/internal/machine"
"github.com/superfly/flyctl/iostreams"
)
func newStop() *cobra.Command {
const (
short = "Stop one or more Fly machines"
long = short + "\n"
usage = "stop [<id>...]"
)
cmd := command.New(usage, short, long, runMachineStop,
command.RequireSession,
command.LoadAppNameIfPresent,
)
cmd.Args = cobra.ArbitraryArgs
flag.Add(
cmd,
flag.App(),
flag.AppConfig(),
selectFlag,
flag.String{
Name: "signal",
Shorthand: "s",
Description: "Signal to stop the machine with (default: SIGINT)",
},
flag.Int{
Name: "timeout",
Description: "Seconds to wait before sending SIGKILL to the machine",
},
flag.Duration{
Name: "wait-timeout",
Shorthand: "w",
Description: "Time duration to wait for individual machines to transition states and become stopped.",
Default: 0 * time.Second,
},
)
return cmd
}
func runMachineStop(ctx context.Context) (err error) {
var (
io = iostreams.FromContext(ctx)
args = flag.Args(ctx)
signal = flag.GetString(ctx, "signal")
timeout = flag.GetInt(ctx, "timeout")
)
machines, ctx, err := selectManyMachines(ctx, args)
if err != nil {
return err
}
machines, release, err := mach.AcquireLeases(ctx, machines)
if err != nil {
return err
}
defer release()
for _, machine := range machines {
fmt.Fprintf(io.Out, "Sending kill signal to machine %s...\n", machine.ID)
if err = Stop(ctx, machine, signal, timeout); err != nil {
return
}
fmt.Fprintf(io.Out, "%s has been successfully stopped\n", machine.ID)
}
return
}
func Stop(ctx context.Context, machine *fly.Machine, signal string, timeout int) (err error) {
machineStopInput := fly.StopMachineInput{
ID: machine.ID,
Signal: strings.ToUpper(signal),
}
if timeout > 0 {
machineStopInput.Timeout = fly.Duration{Duration: time.Duration(timeout) * time.Second}
}
waitTimeout := flag.GetDuration(ctx, "wait-timeout")
client := flapsutil.ClientFromContext(ctx)
err = client.Stop(ctx, machineStopInput, machine.LeaseNonce)
if err != nil {
if err := rewriteMachineNotFoundErrors(ctx, err, machine.ID); err != nil {
return err
}
return fmt.Errorf("could not stop machine %s: %w", machine.ID, err)
}
if waitTimeout != 0 {
machine, err := client.Get(ctx, machine.ID)
if err != nil {
return fmt.Errorf("could not get machine %s to wait for stop: %w", machine.ID, err)
}
err = client.Wait(ctx, machine, "stopped", waitTimeout)
if err != nil {
return fmt.Errorf("machine %s did not stop within the wait timeout: %w", machine.ID, err)
}
}
return
}